Approved Installation Manual for the Experimental Report No 104
EDM-350 Page 6 of 46 Rev A
Engine Data Management System Date 7-10-2021
4. Remote Alarm Light EDM 350
The remote alarm light is a Red or Yellow light depending on the alarm condition. The EDM-350 incorporates a
single light that alerts the pilot that a problem existing within the engine. It is a single light that changes color with
condition and the label associated with the light must be lit by a post light or such that you can see the word
“ENGINE”.
Alarm hierarchy for the EDM-350
When a measurement limit is reached, the pilot should momentarily depress the STEP button on the EDM-350
instrument to extinguish the particular flashing alarm acronyms. If another function has also reached its limit, that
label will then begin to flash. The pilot should continue to monitor the affected parameters as he would if a
conventional analog display had reached a limit. The bar graph functions of CHT, EGT, and TIT remain displayed for
easy reference should one of these limits be reached. Alarm hierarchy is shown in the table below.
2. FP_LO.
3. OILT_HI.
4. CHT.
7. REM.
8. FP_HI.
9. MAP.
12. RPM.
13. OILT_LO.
14. VOLTS.
17. CDT.
18. RES.
19. EGT.
4.1 Dimming
Automatic dimming is provided to dim both the panel display and the remote alarm display. Dimming can also be
accomplished manually to change the Automatic setting. Button #3 initiates the manual Dim function and shows
which button to press for Dim or Bright changes
. The display starts up in the max brightness mode.
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